Primus at the Greek Theatre Berkeley, CA, 30 May 2004. Primus is an American rock band currently composed of singer and bassist Les Claypool, guitarist Larry "Ler" LaLonde, and drummer Tim "Herb" Alexander.

Primus is an American rock band currently composed of singer and bassist Les Claypool, guitarist Larry "Ler" LaLonde, and drummer Tim "Herb" Alexander.

The diversity of their sound has allowed Primus to gain a modest segment of fans from many different rock sub-genres. They are characterized by their irreverent approach to music. Primus release their records on Claypool's Prawn Song Records label, a parody of Led Zeppelin's Swan Song label.